Home / 28,320.32-42,521.92-15,864.64

Finding the Fourth Proportional to 28,320.32, 42,521.92 and 15,864.64

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Solution

The fourth proportional to 28,320.32, 42,521.92 and 15,864.64 is: 23,820.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,320.32 : 42,521.92 = 15,864.64 : x
  2. Step 2: Convert to fraction form
    28,320.32/42,521.92 = 15,864.64/x
  3. Step 3: Cross multiply
    28,320.32x = 42,521.92 × 15,864.64
  4. Step 4: Simplify right side
    28,320.32x = 674,594,952.91
  5. Step 5: Solve for x
    x = 674,594,952.91/28,320.32
  6. Step 6: Final answer
    x = 23,820.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.